Hardware Specifications CPU CPU Model Marvell Armada 385 88F6820 CPU Architecture 32-bit CPU Frequency Dual Core 1.3 GHz Hardware Encryption Engine  Memory System Memory 512 MB DDR3 Storage Drive Bays 2 Compatible Drive Type* (See all supported drives) •3.5" SATA HDD •2.5" SATA HDD (with optional 2.5" Disk Holder) •2.5" SATA SSD (with optional 2.5" Disk Holder) Maximum Internal Raw Capacity 24 TB (12 TB drive x 2) (Capacity may vary by RAID types) Maximum Single Volume Size 16 TB Notes •"Compatible drive type" indicates the drives that have been tested to be compatible with Synology products. This term does not indicate the maximum connection speed of each drive bay. •The maximum raw capacity is not limited by the maximum single volume size. Synology NAS models may utilize capacities over the maximum single volume size as long as each volume created is below the limit. (Learn more)